Syringe



May 12, 1925' 1,537,878

. L. E. POIRIER SYRINGE Filed Jan. 16, 1922 INVENTOR. Ez'rz'er phi??? Patented May 12, 1925,

UNITED STATES LEWIS E. POIBIER, OF CLEVELAND, OHIO.

SYRINGE.

Application filed January 16, 1922.

T 0 all whom it may concern:

Be it known that I, Lnwrs E. POIRIER, a citizen of the United States, and a resident of Cleveland, county of Cuyahoga, and State of Ohio, have invented a new and useful Improvement in Syringes, of which the following is a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle, so as to distinguish it from other inventions.

The present invention, relating, as indicated, to syringes, is directed more particularly to an improved type of expanding syringe provided with simple means for effectively operating the device and for causing liquid to flow through the central tube thereof and to be sprayed from the openings in the tube. To the accomplishment of, the foregoing and related ends, said invention, then, consists of the means hereinafter fully described and particularly pointed out in the claims.

The annexed drawing and the following description set forth in detail certain mechanism embodying the invention, such disclosed means constituting, however, but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawing Fig. 1 is a side elevation of my improved device in its closed position; Fig. 2 is a similar view showing the device when expanded; Fig. 3 is a central vertical section; Fig. 41 is a bottom plan view of the same; Fig. 5 is a section on the line 5-5, Fig. 2; Fig. 6 .is an end view of the central tube; and Fig. 7 is a section showing one type of connection to the syringe.

My improved syringe consists of a central tube member 1, upon which is slidably mounted a sleeve 2, to which are attached a series of radially extending arms 3 connected by means of a circular rim 4. To this rim 4-, opposite to the arms 3, are pivotally attached the expanding arms 5, which are bent in the form shown in Fig. 3 and extend forwardly along the tube 1 and beyond the same, the ends 6 of these arms being brought to substantially the same point so that when closed the three arms present a rounded end without any sharp projections. Each of the arms 5 is provided with a slot 7 extending throughout its central portion. Each of the arms is also connected Serial No. 529,620. 7

to the central tube 1 by means of links 8 which are pivotally attached, both to the arms and to the central tube, so that by moving the slidable sleeve 2 forwardly along the tube 1 the arms 5 are moved forwardly and the links 8 are caused to swing the ends of these arms in towards the central tube and into the parallel position as shown in full lines in Fig. 3. lVhen the sleeve 2 is moved downwardly along tube 1 the action is reversed, the arms 5 being swung outwardly by means of the links 8, and when the sleeve has reached its limiting position on the central tube 1, which is against a stop 9 formed thereon, the links 8 have been brought past a right-angled position with respect to the tube 1, and are hence prevented from collapsing by any lateral pressure exerted against the various arms 5.

The links 8 are pivotally connected to the outer end of the tube, between lugs 15 which are constructed to prevent the links from assuming a parallel position. The links are limited when closed to the angular position shown in Fig. 3, which facilitates the opening of the arms.

It will be understood that the movement of the arms is effected by relative movement between the tube 1 and sleeve 2, and it is a matter of indifference as to whether the tube is moved within the sleeve, or the sleeve is moved along the tube. The end of the tube 10 is formed to receive a rubber tube 11 for supplying liquid to the interior of the tube, from which it may be discharged through a series of small openings 12 and 13, which are so disposed as to discharge either between the arms 5, as in the case of the openings 12, or through the slots 7 in these arms, as is the case with the openings 13. These openings are arranged and directed to provide a proper distribution of the liquid or the material used, their arrangement and form being shown in the various views.

In Fig. 7 I have shown another form of connection which consists of a compressible washer 16 of rubber or similar material over which a tube 17 of glass or the like may be attached, the glass tube leading to a bulb or other suitable reservoir.

The particular advantages of the present invention are its simplified construction and operation, and the means for locking the arms in open position against accidental closure. In addition the arms are held when closed, in. positions that adapt them to open readily upon relative movement of tube and sleeve.

Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as regards the mechanism herein disclosed, provided the means stated by any of the following claims or the equivalent of such stated means be employed.

I thereforeparticularly point out and distinctly claim as my invention 1. A syringe-comprisinga liquid-conveying tube, having discharging apertures adjacent one end, aplurality of links pi-votally attached to said'tube beyond said discharging apertures, arms pivotally attached to the outer ends of said links, a sleeve freely slidably movable on said tube, said arms being pivotally connected to said sleeve, whereby movement thereof "will cause out- Ward movement of said arms, and said tube being provided With apertures arranged between said arms.

2. A syringe comprising a li'quid-conveying tube, a plurality of links p'ivota lly attachedto saidtube adj acentone en'd, a-sleeve freely slidably mounted adjacent the other end of said tube, arms pivotzilly connected to said sleeve and to said links, whereby movement of said sleeve in one direction Will cause outward movement of said arms, and

means adapted to arrest such movement of said links when the same are past a rightangled position with respect to said tube.

3. A syringe comprising a liquid-conveying tube,-a slidable support upon said tube, a series of radially arranged arms pivotally connected to said support adjacent to one end of the tube, and links pivotally attached to the other ends 'of said arms and to the other end of said tube, the relative move ment of said tube and said sliding support causing-the outer ends ofsaid-links to move inwardly of their pivots on said tube to automatically loc'ksaid arms in expanded position.

4. A syringe comprising a liquid-conveying tube, a slidable supportupon said tube, a series of radiallyarrange'd arms pivotally connected to said support adjacent to one end of the tube, links pivotally attached to the other ends of said arms and to the other end of said tube, and means adapted to 'limitthe rearward movement of: said sliding support upon said tube after the outer ends oit said links have moved to a position rearwar dly of their .-p.iV0ts on said tube to automatically lock said arms in expanded position. 1ggigned byme, this 4th day of January,

LEWIS POIRIER. 

